This is a C# extension method that allows you to perform a search operation on a collection of objects represented by IQueryable<T>. The search is performed based on specific properties of the objects.

1. Add the Extensions Class to Your Project: Copy the provided Extensions class into your C# project.

2. Using the Extension Method:

   using AveryBusiness;
   using System.Linq;
   
   // Your IQueryable<T> source
   IQueryable<YourType> source = ...;
   
   // Define search parameters
   string searchQuery = "YourSearchQuery";
   string[] searchParameters = { "Property1", "Property2.NestedProperty" }; // Properties to search
   
   // Perform the search
   var result = source.Search(searchQuery, searchParameters).ToList();

   Replace YourType, "Property1", "Property2.NestedProperty", and "YourSearchQuery" with appropriate types, property names, and search query.

• source: The IQueryable<T> representing the collection of objects to search within.
• search: The string to search for within the specified properties.
• parameters: An array of strings representing the names of the properties to search within. Nested properties can be specified using dot notation (e.g., "Property1.NestedProperty").

The extension method Search<TSource>() dynamically generates a predicate expression based on the search query and properties specified. It builds an expression tree that represents the search condition and applies it to filter the IQueryable<T> source.

The method SearchPredicate<T>() generates the main predicate expression, while PredicateFromProperties<T>() creates individual expressions for each property specified in the search parameters.